U2100B

U2100B Timer Control for Triac and Relay Description The timer control circuit, U2100B, uses bipolar technology. It has different mode selections (Zero voltage switch, Phase control, Relay control). The output stage is triggered according to input conditions. It can be used in triac application for two or three wire system as a power switch. Features D Adjustable and retriggerable tracking time D Window monitoring for sensor input D Enable input for triggering D Internal noise suppression (40 ms) and retrigger blocking (640 ms) Applications D Motion detectors D Touch sensors D Timer D Two or three wire application Package: DIP8, SO8 8 –VRef C2 0.5 VRef + – Trigger signal 6 Trigger window + – 5 0.6 VRef Supply voltage limitation Voltage control monitoring Sync Mode selection 2 –VS 4 C1 L R1 Rsync Load Z D1 Noise suppression 40 ms Retrigger delay 640 ms Control logic 3 Output RG Vmains 1 Enable Ct 7 RC Oscillator Rt 95 9876 GND 0.6 VRef 0.5 VRef ON OFF Divider 1:210 N Figure 1. Block diagram with external circuit TELEFUNKEN Semiconductors Rev. A1, 30-May-96 1 (9) U2100B Pin Description GND –VS Output Sync 1 8 VRef Osc TRIG Pin 1 2 3 4 5 6 7 8 Symbol GND –VS Output Sync EN TRIG Osc VRef Function Reference point Supply voltage Driver output Synchronisation and mode selection Enable Input trigger signal RC Oscillator Reference voltage 2 7 3 6 4 95 9945 5 EN General Description Monostable integrated power control circuit, U2100B, can be used according to ...